Features Key features of the Xperia U  vs

screen size

Xperia U
3.5"
It also comes with dual-channel Wi-Fi a/b/g/n, GPS and Bluetooth 4.0. The Xperia M features NFC connectivity that is well integrated with other Sony products like its TVs for instance. You can easily share images wirelessly by just tapping a Sony TV remote to send the images to the large screen. Similarly, you can share music, photos and.
Xperia M | by PhoneArena (Sep, 2013)

screen resolution

Xperia U
854 x 480
Xperia M
854 x 480
Display The phone features a modest 4-inch LCD screen with a resolution of 480 x 854 pixels.
Xperia M | by PhoneArena (Sep, 2013)

memory

Xperia U
0.5 GB
Xperia M
1 GB

processor

Xperia U
Dual core
Xperia M
Dual core
It is the Qualcomm MSM8227 system chip with a 1GHz dual-core Krait processor.
Xperia M | by PhoneArena (Sep, 2013)

camera resolution

Xperia U
5 MP
Xperia M
5 MP
The front camera is a very basic VGA unit, but we still like the fact that it’s there - it’s definitely useful for video conferencing.
Xperia M | by PhoneArena (Sep, 2013)

Differences What are the advantages of each

Front view of Sony Xperia U

Reasons to consider the
Sony Xperia U

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Sharper screen 279 ppi vs 244 ppi Around 15% sharper PPI; enjoy photo-realistic, crisp images
Store slightly more stuff 8 GB vs 4 GB 2x more storage capacity; free yourself from memory cards
Front view of Sony Xperia M

Reasons to consider the
Sony Xperia M

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Supports NFC Yes vs No Somewhat common; Enables payment by phone and other wireless communications
Is 4G Yes vs No Somewhat common; Supports the fastest, most reliable networks
More battery capacity 1,750 mA·h vs 1,320 mA·h Around 35% more battery capacity
Records higher def video 1280 x 720 @ 30 fps vs 1280 x 720 @ Unknown 30x higher def video
Longer talk time (3G) 540 min vs 336 min More than 60% longer talk time (3G); go days without charging
Bigger screen 4" vs 3.5" Around 15% bigger screen
Thinner 9.3 mm vs 12 mm More than 20% thinner
Longer standby time 29,952 min vs 15,552 min Around 95% longer standby time

Reviews Word on the street

Xperia U  vs

7.5
7.3
We have a dual-core processor, the new NXT design line of Sony with the transparent strip in the bottom, a screen with good pixel density, and fast camera capable of HD video.
Xperia U

8.0
6.0
There's a 3D option too, should you have a DLNA-enabled 3D TV to share the resulting 3D stills with.
Xperia U

Overall

7.7 Out of 10
7.0 Out of 10

Specifications Full list of technical specs

screen

Xperia U  vs
Size 3.5" 4"
Resolution 854 x 480 854 x 480
Touchscreen Capacitive Capacitive
Multitouch Yes Yes
PPI 279 ppi 244 ppi

hardware

Clock speed 1 GHz 1 GHz
Number of cores Dual core Dual core
RAM 0.5 GB 1 GB
Internal storage 8 GB 4 GB

photo & video

Camera 5 MP 5 MP
Resolution 5 MP 5 MP
Flash Yes Yes
Secondary camera 0.3 MP 0.3 MP
Video resolution 1280 x 720 @ Unknown 1280 x 720 @ 30 fps

cellular

Generation 3.5G 4G
Networks
GPRS (0.01 Mb/s)
HSUPA (5.76 Mb/s)
UMTS (0.38 Mb/s)
HSPA (unspecified)
EDGE (0.38 Mb/s)
Unknown (14.4 Mb/s)
HSDPA (14.4 Mb/s)
HSDPA+ (21.1 Mb/s)
GSM (0.01 Mb/s)

battery

Talk time 396 min 618 min
Talk time (3G) 336 min 540 min
Standby time 15,552 min 29,952 min
Standby time (3G) 28,368 min 27,216 min
Capacity 1,320 mA·h 1,750 mA·h

form factor

Xperia U  vs
Weight 110 g 115 g
Thickness 12 mm 9.3 mm
Size 54 x 112 x 12 mm 62 x 124 x 9.3 mm

sensors

Has an assisted GPS Yes Yes

music

Supports FM radio Yes Yes

software

Operating system Android 4.0 Android 4.1
Multitasking Yes Yes
App store Android Market Android Market
Adobe flash support No No
App store size 850,000 apps 850,000 apps

connectivity

Acts as a wi-fi hotspot Yes Yes
Supports NFC No Yes
Bluetooth Bluetooth v2.1 Bluetooth v4.0
Sony Xperia U
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Sony Xperia M
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